cubicweb #1892491 pb with rql query about cwsource on crm [resolved]

Executing "Any X,N WHERE X cw_source Y, Y name N" on logilab's internal crm raises an exception.

prioritynormal
typebug
done in3.13.4
load left0.000
closed by#8d0edec31aaf [querier] we should not insert None but skip the line when some unknown eid is detected (closes #1892491)